A surgical clip for a clip applier to ligate vessels. The clip contains two opposing external and internal legs connected in parallel by two external apex and one internal apex to form a Y-shape configuration. As a vessel is ligated and compressed between the two external legs, the vessel attempting to expand from its compressed position, applies outwardly lateral forces to the external legs causing them to rotate outwardly. In response, the two opposing internal legs rotate in an opposing directions to the external legs rotations to maintain the position of the clip over the compressed tubular vessel.
